The :-moz-locale-dir(rtl) CSS pseudo-class matches an element if the user interface is being displayed right-to-left. This is determined by the preference intl.uidirection.locale (where locale is the current locale) being set to "rtl".

CSS CSS Reference Localization NeedsCompatTable NeedsExample Non-standard Pseudo-class Right-to-left

API DOM DOMRect DOMRectReadOnly Experimental Expérimental Geometry Property Reference Référence right